<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <table>
        <caption></caption>
        <thead></thead>
        <tbody></tbody>
    </table>
    <form action="">
        <fieldset></fieldset><!-- 对表单进行分组 -->
        <label for="name">名字</label>
        <input type="text" name="username" id="name">
    </form>
   
</body>

</html>